1.  postmortem(n = noun.communication) post-mortem - discussion of an event after it has occurred; Array
is a kind of discussion, give-and-take, word
Derived form adjective postmortal₁

2.  postmortem(n = noun.act) autopsy, necropsy, pm, post-mortem, post-mortem examination, postmortem examination - an examination and dissection of a dead body to determine cause of death or the changes produced by disease; Array
is a kind of examination, scrutiny

1.  postmortem(a = adj.all) postmortal - occurring or done after death; "postmortem changes"; "a postmortem examination to determine cause of death"; "postmortal wounds"
Antonym: antemortem

2.  postmortem(s = adj.all) Array - after death or after an event; "a postmortem examination to determine the cause of death"; "the postmortem discussion of the President's TV address"

postmortem examination